Good crab, bad crab?

[Back where it all began]

Mt y tanks been up and running for 10 weeks. I have 110lbs of live rock and never saw any evidence of a hitchhiker.
Today, I saw this guy coming out for food, and I spotted a second smaller one. From what I can tell, nothing is missing, or at least doesn’t appear to be.
So, good crab-bad crab?

 

[ScottR]

My first thought is gorilla crab. Bad.

 

[AdamNC]

Fuzzy crabs are usually bad unless it has just the fuzzy legs like Emerald Crabs.

 

[uhgster1]

I think the general rule is if the claws end in sharp points they’re the bad kind. Emeralds have blunt tips. And the top carapace is smooth, not hairy.

 

[DangerDave]

Wow, very cool crab. I'd want him out. There’s always the sump...

 

[Roush427R]

Looks like a Gorilla crab.

 

[Timfish]

I think the general rule is if the claws end in sharp points they’re the bad kind. Emeralds have blunt tips. And the top carapace is smooth, not hairy.

Just and FYI, there are Mithrax sp. that are "hairy" but have "spoons" on the tips of their claws.